共 48 条
Lauryl benzene sulfonic acid sodium-carbon nanotube-modified PbO2 electrode for the degradation of 4-chlorophenol
被引:60
作者:
Duan, Xiaoyue
[1
,2
]
Ma, Fang
[1
]
Yuan, Zhongxin
[1
]
Chang, Limin
[3
]
Jin, Xintong
[3
]
机构:
[1] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Sch Municipal & Environm Engn, Harbin 150090, Peoples R China
[2] Jilin Normal Univ, Sch Environm Engn, Siping 136000, Peoples R China
[3] Jilin Normal Univ, Sch Chem, Siping 136000, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Electro-catalytic oxidation;
PbO2;
Carbon nanotube;
Lauryl benzene sulfonic acid sodium;
4-Chlorophenol;
ELECTROCHEMICAL OXIDATION;
ELECTROCATALYTIC OXIDATION;
ANODIC-OXIDATION;
AQUEOUS-SOLUTION;
BY-PRODUCTS;
WATER;
ELECTROOXIDATION;
CHLOROPHENOLS;
CODEPOSITION;
DESTRUCTION;
D O I:
10.1016/j.electacta.2012.05.036
中图分类号:
O646 [电化学、电解、磁化学];
学科分类号:
081704 ;
摘要:
The lauryl benzene sulfonic acid sodium (LAS)-carbon nanotube (CNT)-modified PbO2 electrode was fabricated by thermal deposition and electrodeposition methods. Its morphology and composition were compared with those of PbO2. CNT-PbO2, and LAS-PbO2 electrodes. It was found that CNT could be doped into the PbO2 film in the presence of LAS. The [Fe(CN)(6)](4-/3-) redox couple in 0.1 M KCl was used for initial evaluation of the electro-catalytic activity of prepared electrodes. The results showed that LAS-CNT-PbO2 electrode exhibited the largest peak current and the smallest Delta E-p in [Fe(CN)(6)](4-/3-) redox process. The stability tests showed that the service life of LAS-CNT-PbO2 electrode was 1.8 times longer than that of PbO2 electrode. The electro-catalytic activity of the prepared electrodes was also examined for the electrochemical oxidation of 4-chlorophenol (4-CP) and the LAS-CNT-PbO2 electrode exhibited the highest activity for 4-CP degradation among the four PbO2-based electrodes. Besides, HPLC was employed to identify the products resulting from the electrochemical oxidation of 4-CP and the degradation mechanism of 4-CP was also discussed. (C) 2012 Elsevier Ltd. All rights reserved.
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页码:333 / 343
页数:11
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